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Helpful answers
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Jan 9, 2015 4:44 AM in response to morpho73by John Galt,★HelpfulYou may have started the Mac in "verbose mode", perhaps inadvertently.
If it is now starting, operating, and shutting down normally don't worry about it.
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Jan 9, 2015 6:28 AM in response to John Galtby morpho73,Hi John,
Nope, I didn't start in verbose mode for sure. (ok...I guess "for sure" is not out of the question...just very, very, very unlikely)
It happened on shutdown not start up.
The "terminal screen" that appeared on shutdown was grey and horizontal lines kinda blocked the lines of code running down the screen.
Garbled screen combined with mysto code raining down is well unsettling mate!
Hasn't happened since...
I have done just about everything I know
single user,
fsck
permissions
repair disc
Diagnose hardware start up
etc..
Has me freaked as I am in the middle of putting together a magazine and I need it to keep working until I put it to bed in a week.
....pray for my logic board! (and it's only a year old board actually, the original was replaced under warranty)
Thanks again
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Jan 9, 2015 9:11 AM in response to morpho73by John Galt,It may have been a kernel panic, which should not normally occur. If it occurs again it deserves further investigation.
OS X: About kernel panics - Apple Support
Until then make sure you have adequate backups: Mac Basics: Time Machine backs up your Mac - Apple Support